Oct 1990 Joined Hokuto Denki Kogyo Co., Ltd. Apr 1994 Director, Hokuto Denki Kogyo Co., Ltd. Oct 1999 Representative Director, President, Hokuto Denki Kogyo Co., Ltd. Jun 2002 Director of the Company Sep 2005 Director, in charge of General Manager, Second Business Division Jun 2013 Senior Managing Director, in charge of General Manager, Business Division Overall Management Apr 2015 Representative Director, Chairman, Hokuto Denki Kogyo Co., Ltd. (current) Jun 2015 President and Director of the Company, in charge of General Manager, Business Division Overall Management Sep 2019 Representative Director, Chairman, Kido Bolt Co., Ltd. (current) Mar 2023 Representative Director, Chairman, Darin Sangyo Co., Ltd. (current) Jun 2024 Representative Director, President of the Company (current) Mar 2026 Representative Director, President, Sanin Kensetsu Service Co., Ltd. (current)

Sep 1979 Joined Hatsuken Co., Ltd. (now Consec Co., Ltd.) Apr 1998 General Manager, Technical Department of the Company Oct 2000 Executive Officer, General Manager, Technical Manufacturing Department of the Company Jun 2007 Director, in charge of General Manager, Technical Manufacturing Department Jun 2013 Managing Director, in charge of General Manager, Second Business Division Jun 2019 Senior Managing Director, in charge of General Manager, Second Business Division Jun 2026 Senior Managing Director, in charge of General Manager, Business Division Overall Management (current)

Jul 2019 Director, Hiroshima Nishi Tax Office Dec 2020 Registered as Certified Tax Accountant Jun 2021 Director of the Company, in charge of General Manager, Administration Division Jun 2026 Director, in charge of Group Company Overall Management (current)

Jun 1991 Joined the Company Jun 2018 Executive Officer, Deputy General Manager, Construction Business Division Jul 2022 Executive Officer, General Manager, Construction Business Division Jun 2023 Director, in charge of General Manager, Construction Business Division (current) Oct 2023 Representative Director, President, Marukin Construction Co., Ltd. (current)

Jul 2012 Director, Collection Department, Hiroshima Regional Taxation Bureau Sep 2013 Registered as Certified Tax Accountant Sep 2013 Opened Mitsuhiro Fujiwara Tax Accounting Office, Principal (current) Jun 2014 Director of the Company (current)

Apr 1980 Joined Hiroshima Gas Co., Ltd. Jun 2013 Managing Executive Officer, Hiroshima Gas Co., Ltd. Jun 2014 Representative Director, President, Hiroshima Gas Mate Co., Ltd. Apr 2020 Chairman, Hiroshima Gas Mate Co., Ltd. Jun 2021 Adviser, Hiroshima Gas Mate Co., Ltd. Jun 2025 Director of the Company (current)

Nov 2001 Joined the Company, Head of Computer Systems Office, Administration Division Feb 2007 Joined Nihon Kosen Co., Ltd. Jul 2009 Director, Nihon Kosen Co., Ltd. (current) Jun 2013 Corporate Auditor of the Company Jun 2016 Full-time Corporate Auditor of the Company (current)

Jun 1997 Corporate Auditor, Mentec Co., Ltd. (now Mentec World Co., Ltd.) Jun 1999 Director, Mentec Co., Ltd. Apr 2002 Senior Managing Director, Mentec Co., Ltd. Apr 2003 Representative Director, President, Mentec Co., Ltd. (current) Jun 2022 Corporate Auditor (Part-time) of the Company (current)

Oct 2005 Registered as Attorney-at-Law (Hiroshima Bar Association) Oct 2005 Joined Yamashita Tetsuo Law Office (now Yamashita & Nagai Law Office) (current) Apr 2018 Vice President, Hiroshima Bar Association Apr 2019 Director, Chugoku Federation of Bar Associations Jun 2024 Corporate Auditor (Part-time) of the Company (current)